A Dark Secret Kept Quietly

I'm an eighteen-plus teacher who's been with my partner for years. We never talk about it, but sometimes I let him use the classroom desk as a prop. The wood is cold and hard under me when he fucks me from behind, his grip tight on my hips. It feels so wrong, yet...right in that moment. I'm ashamed just thinking of how much I crave those rough moments on that sacred piece of furniture.